Title :
Speckle noise reduction by focal plane wave-front sensing in high contrast imaging optics
Author :
Sato, Kiminori ; Nishikawa, J. ; Ohya, M. ; Horie, Masaki ; Tanaka, Yuichi ; Kurnagai, S. ; Kurokawa, Takashi ; Murakami, Noriyuki
Author_Institution :
Tokyo Univ. of Agric. & Technol., Koganei, Japan
Abstract :
For the direct detection of extrasolar planets, a high contrast imaging optics system is required. One of the problems in it is speckle noise due to the wave-front error in the coronagraph optics. We proposed the focal plane wave-front sensing method to reduce the speckle noise and successfully reduced the speckle noise level by 2 order of magnitude.
Keywords :
astronomical image processing; coronagraphs; extrasolar planets; focal planes; image denoising; optical engineering computing; speckle; wavefront sensors; coronagraph optics; extrasolar planet direct detection; focal plane wave-front sensing method; high contrast imaging optics system; magnitude order; speckle noise level; speckle noise reduction; wave-front error; Cameras; Noise; Noise reduction; Optics; Sensors; Speckle;
Conference_Titel :
Microoptics Conference (MOC), 2013 18th
Conference_Location :
Tokyo
